US3684575A - Use of electrostatic charge to repel substances from surfaces during cleaning - Google Patents
Use of electrostatic charge to repel substances from surfaces during cleaning Download PDFInfo
- Publication number
- US3684575A US3684575A US868604A US3684575DA US3684575A US 3684575 A US3684575 A US 3684575A US 868604 A US868604 A US 868604A US 3684575D A US3684575D A US 3684575DA US 3684575 A US3684575 A US 3684575A
- Authority
- US
- United States
- Prior art keywords
- positive
- charge
- vehicle
- vehicle body
- repel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004140 cleaning Methods 0.000 title description 9
- 239000000126 substance Substances 0.000 title description 7
- 239000002245 particle Substances 0.000 abstract description 13
- 230000005686 electrostatic field Effects 0.000 abstract description 6
- 239000003990 capacitor Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000007921 spray Substances 0.000 description 8
- 238000005406 washing Methods 0.000 description 5
- 239000002801 charged material Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000005201 scrubbing Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001846 repelling effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S3/00—Vehicle cleaning apparatus not integral with vehicles
- B60S3/04—Vehicle cleaning apparatus not integral with vehicles for exteriors of land vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S15/00—Brushing, scrubbing, and general cleaning
- Y10S15/02—Car cleaning plants
Definitions
- This invention relates to a method of cleaning dirt from a conductive surface through the use of a electro static charge that repels the dirt particles.
- Another important object of the invention is to provide a method of repelling charged dirt particles or other materials from a surface to be cleaned.
- Still another important object of this invention is to provide a method of electrically charging a conductive surface to repel dirt particles or other materials thereon carrying a charge of the same sign, in order to further provide an improved method of cleaning such surface.
- Yet another important object is to provide a method of cleaning vehicle bodies that carry a normally negative electrostatic charge, wherein such method includes reversing the charge to repel ionic mineral substances or other positively charged materials adhered to the body surface.
- the negative electrostatic charge assumed by the frame and body of an automotive vehicle inhibits the cleaning of the exterior body surface since, as mentioned above, the dirt that collects on the surface consists predominantly of mineral substances in positive ion form.
- the attraction of unlike charges causes the dirt particles to adhere to the surface by an electrostatic bond as well as the physical adhesion that is readily broken by a suitable solvent, such as water or a combination of water and detergent in usual washing techniques. Being incapable of breaking the elec trostatic bond except, of course, by actual physical displacement of the dirt particles or chemical interaction therewith, substantial scrubbing and/ or the use of strong detergents are oftentimes required for efficient and thorough cleaning.
- the negative charge of the vehicle body is reversed in order to repel the positively charged dirt particles and thereby break the electrostatic bond between such particles and the surface of the vehicle body. This not only eliminates the electrostatic forces of adhesion, but also repels the dirt particles from the surface to be cleaned so that a water spray is effective in quickly flushing the dirt from the surface without the need for scrubbing under ordinary conditions.
- the facility utilized in the practice of the present invention is preferably enclosed and may be provided with a means of automatically subjecting a vehicle to a water spray over its entire outer surface.
- a means of automatically subjecting a vehicle to a water spray over its entire outer surface Such installations are commonplace and may be of the type where the vehicle is slowly advanced through the water spray or, alternative- 1y, maintained stationary through the water spray or, alternatively, maintained stationary while subjected to a plurality of jets that strike the body surface.
- the water spray may also be applied to the body manually.
- the particular means of applying the water spray to the body surface is not critical to the operability of the present invention, as will become apparent.
- One or more plate electrodes are positioned in spaced relationship to the body surface at the facility and are connected to the negative output terminal of a source of direct voltage.
- the positive terminal is connected to the vehicle body, such as through the use of a lead that is electrically connected to the bumper of the vehicle.
- a contact arm (connected to the positive terminal) could be disposed in the path of travel of the vehicle entering the facility, and the vehicle driven to a position where the arm engages the front or rear bumper.
- the exact means of connecting the car body to the positive potential is not important but would be dictated by considerations of expediency for a particular washing installation.
- the electrodes should be as close to the surface to be cleaned as is convenient and still permit the free passage of a water spray.
- the electrode or electrodes and the metallic surface of the body form a capacitive configuration which may take a variety of forms.
- a pair of metal plates may be disposed on opposite sides of the vehicle and oriented in parallel vertical planes, the height of the plates being at least as great as the height of vehicles to be accommodated and the length thereof equal to the maximum vehicle length.
- An overhead plate could also be employed in addition to the side plates.
- a single electrode may be formed by a single metallic plate of inverted, trough shape to form a tunnel into which the vehicle is driven. Whether single or multiple electrodes are utilized, allare connected to the negative terminal of the voltage source so that the electrostatic field of the capacitor is between the outer, metallic surface and the vehicle body and the adjacent electrode or electrodes.
- the capacitive configuration serves to charge the vehicle body positive so that the metallic surface thereof becomes the positively charged plate of a capacitor, thereby repelling the positive ionic substances adhered thereto which are to be removed.
- the surface is subjected to the water spray while it is maintained at the positive potential, thus the collected dirt particles and other materials are readily washed away.
- the voltage utilized will depend upon the capacitance of the configuration since the transfer of charge in a capacitor is directly dependent upon both the capacitance thereof and the potential difference between its oppositely charged plates. High voltages on the order of several thousand volts are preferred, the only limitation being considerations of safety.
- the power source may utilize a 110 volt alternating current supply with a step-up transformer to provide the needed voltage level.
- current limiting should be employed to prevent the creation of a hazard. It should be understood that current output is of little significance since the function of the power source and the capacitive configuration is to reverse the charge on the surface of the vehicle body by placing a positive static charge thereon.
- the negative plate electrodes should be encapsulated in an insulating covering as well as mounted on insulated supports.
- the tires of the vehicle provide adequate isolation of the body from ground.
- a method of cleaning charged materials from a conductive surface having an electrostatic charge that attracts and adheres said materials thereto comprising the steps of:
- said step of reversing said charge including the substeps of:
- said step of removing said materials including washing the materials from said surface.
- a method of cleaning positively charged materials from a conductive surface of a vehicle body wherein said 3.
- the step of positively charging said surface includes the substeps surface has a normally negative electrostatic charge that providing an electrode in spaced relationship to said surface to present a capacitive configuration; and applying positive and negative electrical potential to said surface and said electrode respectively to thereby establish an electrostatic field therebetween and effect the positive charging of the surface.
- step of positively charging said surface includes the substeps of:
Abstract
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86860469A | 1969-10-22 | 1969-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3684575A true US3684575A (en) | 1972-08-15 |
Family
ID=25351989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US868604A Expired - Lifetime US3684575A (en) | 1969-10-22 | 1969-10-22 | Use of electrostatic charge to repel substances from surfaces during cleaning |
Country Status (1)
Country | Link |
---|---|
US (1) | US3684575A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502565A1 (en) * | 1981-03-26 | 1982-10-01 | Wendels Guy | Automatic car washing machine - uses rotating jets for spraying wetting agent onto car before washing, rinsing and air drying |
NL9401693A (en) * | 1994-10-13 | 1996-05-01 | Nelis Van Der Est | Method for washing surfaces, in particular the outside of a car body, and car wash |
US5755970A (en) * | 1995-12-06 | 1998-05-26 | Fourqurean; George Earl | Method for reduction of pipeline accumulation |
US20110100401A1 (en) * | 2008-05-14 | 2011-05-05 | Gerresheimer Pisa S.P.A | Method and device for removing contaminating particles from containers |
US20140048098A1 (en) * | 2011-03-23 | 2014-02-20 | Sri International | Active Electroadhesive Cleaning |
US9358590B2 (en) | 2011-03-23 | 2016-06-07 | Sri International | Electroadhesive surface cleaner |
-
1969
- 1969-10-22 US US868604A patent/US3684575A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502565A1 (en) * | 1981-03-26 | 1982-10-01 | Wendels Guy | Automatic car washing machine - uses rotating jets for spraying wetting agent onto car before washing, rinsing and air drying |
NL9401693A (en) * | 1994-10-13 | 1996-05-01 | Nelis Van Der Est | Method for washing surfaces, in particular the outside of a car body, and car wash |
US5755970A (en) * | 1995-12-06 | 1998-05-26 | Fourqurean; George Earl | Method for reduction of pipeline accumulation |
US20110100401A1 (en) * | 2008-05-14 | 2011-05-05 | Gerresheimer Pisa S.P.A | Method and device for removing contaminating particles from containers |
US9776222B2 (en) * | 2008-05-14 | 2017-10-03 | Gerresheimer Glas Gmbh | Method for removing contaminating particles from containers |
US20140048098A1 (en) * | 2011-03-23 | 2014-02-20 | Sri International | Active Electroadhesive Cleaning |
US9186709B2 (en) * | 2011-03-23 | 2015-11-17 | Sri International | Active electroadhesive cleaning |
US9302299B2 (en) | 2011-03-23 | 2016-04-05 | Sri International | Active electroadhesive cleaning |
US9358590B2 (en) | 2011-03-23 | 2016-06-07 | Sri International | Electroadhesive surface cleaner |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KING, ARTHUR S., 8021 CHEROKEE LANE, LEAWOOD, KN. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KING, ARTHUR S.;REEL/FRAME:004081/0260 Effective date: 19821215 |
|
AS | Assignment |
Owner name: LOESS CORPORATION, A CORP. OF MO, MISSOURI Free format text: ASSIGNS ALL INTEREST IN SAID TRUST DATED DECEMBER 17, 1982;ASSIGNOR:KING, ARTHUR S., TRUSTEE UNDER ARTHUR S. KING, TRUST DATED DECEMBER 17, 1982;REEL/FRAME:004834/0648 Effective date: 19871230 Owner name: LOESS CORPORATION, 114 WEST 11TH ST., KANSAS CITY, Free format text: ASSIGNS ALL INTEREST IN SAID TRUST DATED DECEMBER 17, 1982;ASSIGNOR:KING, ARTHUR S., TRUSTEE UNDER ARTHUR S. KING, TRUST DATED DECEMBER 17, 1982;REEL/FRAME:004834/0648 Effective date: 19871230 Owner name: KING, ARTHUR S., TRUSTEE, AS TRUSTEE UNDER A CERTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE SEPT. 17, 1985;ASSIGNOR:KING, ARTHUR S.;REEL/FRAME:004822/0768 Effective date: 19871230 Owner name: KING, ARTHUR S., INDIVIDUAL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE SEPT. 18, 1985;ASSIGNOR:KING, ARTHUR S., TRUSTEE, AS TRUSTEE OF A CERTAIN TRUST DATED 12-17-82.;REEL/FRAME:004822/0764 Effective date: 19871230 Owner name: LOESS CORPORATION, A CORP. OF MO, MISSOURI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KING, ARTHUR S.;REEL/FRAME:004834/0637 Effective date: 19871230 Owner name: LOESS CORPORATION, A MO., CORP.,MISSOURI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KING, ARTHUR, S.;REEL/FRAME:004827/0038 Effective date: 19850621 Owner name: KING, ARTHUR S.,KANSAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KING, ARTHUR, S.;REEL/FRAME:004827/0033 Effective date: 19850621 Owner name: LOESS CORPORATION, A MO CORP.,MISSOURI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KING, ARTHUR S.;REEL/FRAME:004826/0683 Effective date: 19871230 Owner name: LOESS CORPORATION, 114 WEST 11TH ST., KANSAS CITY, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KING, ARTHUR S.;REEL/FRAME:004834/0637 Effective date: 19871230 Owner name: LOESS CORPORATION, 114 WEST 11TH STREET, KANSAS CI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KING, ARTHUR, S.;REEL/FRAME:004827/0038 Effective date: 19850621 Owner name: KING, ARTHUR S., 8021 CHEROKEE LANE, LEAWOOD, KANS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KING, ARTHUR, S.;REEL/FRAME:004827/0033 Effective date: 19850621 Owner name: LOESS CORPORATION, 114 WEST 11TH STREET, KANSAS CI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KING, ARTHUR S.;REEL/FRAME:004826/0683 Effective date: 19871230 |